goals, policies, process, procedures and guidelines for creating a parklet in San Francisco. The Manual also serves as a resource for those outside of San Francisco working to establish parklet programs in their own cities. Design and purpose Parklets are designed to provide a public place for passersby to relax and enjoy the atmosphere of the city around them, in places where either current urban parks are lacking or where the existing sidewalk width is not large enough to accommodate vibrant street life activities. Parklets can be designed to be either permanent fixtures, or can be designed to be temporary/seasonal in places where snow removal is a concern. Seasonal parklets are found in New York City, Philadelphia, and Chicago. In 2015, Shiftspace Design introduced the world's longest seasonal parklet at 60 feet in length. Many cities choose to install these sites in order to create more public space by creating "places for people to sit, relax and enjoy the city." The Vancouver 2013 Parklet Pilot Program Guide explains parklets purpose and design as "benefit local businesses, residents, and visitors by providing unique public spaces that attract customers and foster community conversation. They can also have additional benefits such as adding more space for people to walk in congested areas. The typical design is a platform that extends the sidewalk and provides amenities like seats, tables, bike racks, and landscaping" Impact studies In September 2010, The San Francisco Great Streets Project (then part of the San Francisco Bicycle Coalition) published a study, "Divisadero Trial Parklet Impact Report," on one of the first eight parklets built in San Francisco. This study was followed in January 2012 by a "Parklet Impact Study" analyzing three corridors in San Francisco. From October 2012 to March 2013, Los Angeles research collaborative Parklet Studies to design and implement a one-year study of the Parklets in downtown Los Angeles. The final report was released in March 2013 along with partners at the UCLA Lewis Center for Regional Policy Studies. New York City, Philadelphia, and Seattle have all since published evaluation reports from parklet and parklet-related efforts. Locations In the United States, San Francisco hosts more parklets than any other City. The city's "Pavement to Parks" program was formed to facilitate installation of parklets as longer-term, yet still temporary, fixtures. As of 2011 the program had received over 50 applications from sponsors around the city. In 2011 the Union